It's odd to compare the drag of a truck with huge frontal cross-section and zero downforce with that of a supercar that has a tiny cross section but large drag

It's odd to compare the drag of a truck with huge frontal cross-section and zero downforce with that of a supercar that has a tiny cross section but large drag coefficient to create downforce. An F1 car would have an even higher coefficient of 1.0... Compare it to a normal car instead, and it's the equivalent of an old Chevy Tahoe and far worse than normal saloon cars which are typically at 0.29ish.